Generate new API signatures from doclava

Doclava now generates API signatures of classes and their members
which are not part of the public SDK. Adjust the arguments passed
to Doclava to enable that feature.

Bug: 64382372
Test: m
Change-Id: I47de683dd2b00fce73b82581a13fbe1013ef625f
diff --git a/Android.mk b/Android.mk
index 7d5afcd..5dfa81c 100644
--- a/Android.mk
+++ b/Android.mk
@@ -280,6 +280,8 @@
 		$(framework_docs_LOCAL_DROIDDOC_OPTIONS) \
 		-referenceonly \
 		-api $(INTERNAL_PLATFORM_API_FILE) \
+		-privateApi $(INTERNAL_PLATFORM_PRIVATE_API_FILE) \
+		-privateDexApi $(INTERNAL_PLATFORM_PRIVATE_DEX_API_FILE) \
 		-removedApi $(INTERNAL_PLATFORM_REMOVED_API_FILE) \
 		-nodocs
 
@@ -289,7 +291,9 @@
 
 include $(BUILD_DROIDDOC)
 
-$(INTERNAL_PLATFORM_API_FILE): $(full_target)
+$(full_target): .KATI_IMPLICIT_OUTPUTS := $(INTERNAL_PLATFORM_API_FILE) \
+                                          $(INTERNAL_PLATFORM_PRIVATE_API_FILE) \
+                                          $(INTERNAL_PLATFORM_PRIVATE_DEX_API_FILE)
 $(call dist-for-goals,sdk,$(INTERNAL_PLATFORM_API_FILE))
 
 # ====  the system api stubs ===================================
@@ -314,6 +318,8 @@
 		-referenceonly \
 		-showAnnotation android.annotation.SystemApi \
 		-api $(INTERNAL_PLATFORM_SYSTEM_API_FILE) \
+		-privateApi $(INTERNAL_PLATFORM_SYSTEM_PRIVATE_API_FILE) \
+		-privateDexApi $(INTERNAL_PLATFORM_SYSTEM_PRIVATE_DEX_API_FILE) \
 		-removedApi $(INTERNAL_PLATFORM_SYSTEM_REMOVED_API_FILE) \
 		-exactApi $(INTERNAL_PLATFORM_SYSTEM_EXACT_API_FILE) \
 		-nodocs
@@ -324,7 +330,9 @@
 
 include $(BUILD_DROIDDOC)
 
-$(INTERNAL_PLATFORM_SYSTEM_API_FILE): $(full_target)
+$(full_target): .KATI_IMPLICIT_OUTPUTS := $(INTERNAL_PLATFORM_SYSTEM_API_FILE) \
+                                          $(INTERNAL_PLATFORM_SYSTEM_PRIVATE_API_FILE) \
+                                          $(INTERNAL_PLATFORM_SYSTEM_PRIVATE_DEX_API_FILE)
 $(call dist-for-goals,sdk,$(INTERNAL_PLATFORM_SYSTEM_API_FILE))
 
 # ====  the test api stubs ===================================